install-cn-basics.yaml

---
- name: Install docker, kubectl and helm
  hosts: all
  gather_facts: false
  tasks:
    - name: Install docker
      # https://docs.docker.com/engine/install/ubuntu/
      block:
      - name: Download convinience script
        shell:  echo $PWD && curl -fsSL https://get.docker.com -o get-docker.sh

      - name: Run convinience script
        become: true
        shell: sh get-docker.sh
      
      - name: Delete convinience script
        file:
          path: get-docker.sh
          state: absent

      - name: Adding existing user "{{ ansible_user }}" to group docker
        become: true
        user:
          name: "{{ ansible_user }}"
          groups: docker
          append: yes
      
      # maybe not needed
      - name: "Edit grub file to allow cgroup to set memory"
        become: true  
        lineinfile: 
          path: "/etc/default/grub"
          regexp: '^GRUB_CMDLINE_LINUX=(.*)$' 
          line: 'GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1"'
          backrefs: yes

      # maybe not needed
      - name: Update grub
        become: true
        shell: update-grub

      - name: Reset ssh connection to allow user changes to affect ansible user
        meta:
          reset_connection

    - name: Install kubectl
      # https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/
      block:
      - name: Install Prerequisits
        become: true
        apt:
          update_cache: yes
          pkg:
            - apt-transport-https
            - curl
            - ca-certificates
            - gnupg

      - name: Create keyrings dir if it doesnt exist
        become: true
        ansible.builtin.file:
          path: /etc/apt/keyrings
          state: directory
          mode: '0755'

      - name: Download the public signing key for the Kubernetes package repositories
        become: true
        shell: curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/deb/Release.key | gpg --batch --yes --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg && chmod 644 /etc/apt/keyrings/kubernetes-apt-keyring.gpg

      - name: Add the Kubernetes apt repository
        become: true
        shell: echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.30/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list && chmod 644 /etc/apt/sources.list.d/kubernetes.list
 
      - name: Install kubectl
        become: true
        apt:
          update_cache: yes
          pkg:
            - kubectl
  
    - name: Install helm
      # https://helm.sh/docs/intro/install/
      block:
      - name: Add repo key
        become: true
        shell: curl https://baltocdn.com/helm/signing.asc | apt-key add -

      - name: Install Prerequisits
        become: true
        apt:
          update_cache: yes
          pkg:
            - apt-transport-https

      - name: Add repository
        become: true
        shell: echo "deb https://baltocdn.com/helm/stable/debian/ all main" | tee /etc/apt/sources.list.d/helm-stable-debian.list

      - name: Install helm
        become: true
        apt:
          update_cache: yes
          pkg:
            - helm

    - name: Unconditionally reboot the machine with all defaults
      become: true
      reboot: